Question

10) The role of potassium hydroxide in the experiment to show that CO2 is given out during respiration is

a) To absorb oxygen.
b) To create a partial vaccum in the flask
c) To absorb carbon dioxide.
d) Both (b) and (c).
​

Answer 1

Answer:

The answer is option C) To absorb carbon dioxide.

The rise in the level of water indicates that CO2 is produced by germinating seeds during respiration. Actually, the germinating seeds respire and produce CO2, which is absorbed by KOH solution. This creates a vacuum in the conical flask.

Answer 2

Answer:

C) to absorb carbon dioxide

Explanation:

Potassium hydroxide is used in the experiment for the absorption of CO2 from the plant released during respiration. When KOH absorbs CO2, it creates a vacuum in the flask. The air present in the bent glass tube moves into the conical flask.